Rijau climate — normals and trends
Rijau (Nigeria) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 27.7 °C and it receives 817 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is April (31.9 °C on average) and the coldest is August (24.8 °C). Rainfall peaks in August.
Rijau averages 0 frost days, 284 hot days (≥ 30 °C) and 109 rainy days per year.
Rijau has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The hottest day of the period reached 42.8 °C (on 4 February 1998) and the coldest 12.3 °C (on 8 January 1957).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
RijauNiger State
- coords
- 11.10°, 5.26°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.7°C
Average daily high
33.4°C
Average daily low
22.6°C
Annual rainfall
817mm
Sunshine / day
10.5h
Mean relative humidity
53%
Average peak wind
14.1km/h
Seasonal range
7.1°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
284 d/yr
Rainy days (≥ 1 mm)
109 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.8 °C
Average feels-like low
23.1 °C
Average peak gust
30.1 km/h
Tropical nights (≥ 20 °C)
313 d/yr
Solar radiation
20.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.51 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
42.8 °C
4 February 1998
Coldest day
12.3 °C
8 January 1957
Wettest day
144 mm
7 August 2023
Windiest day
31.6 km/h
16 April 1944
Strongest gust
59.4 km/h
2 June 2004
Hottest feels-like
45.8 °C
17 April 1998
Coldest feels-like
6.9 °C
8 January 1957
Sunniest day
12.5 h
2 June 1942
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 34.9 °C | +0.9 °C | 0 mm | -0 mm |
| Feb | 36.7 °C | +0.4 °C | 0 mm | -0 mm |
| Mar | 39.2 °C | +1.1 °C | 0 mm | -5 mm |
| Apr | 38.4 °C | +0.6 °C | 1 mm | -23 mm |
| May | 35.6 °C | +0.3 °C | 43 mm | -21 mm |
| Jun | 32.6 °C | +0.4 °C | 18 mm | -64 mm |
| Jul | 29.4 °C | 0.0 °C | 265 mm | +91 mm |
| Aug | 28.5 °C | +0.3 °C | 310 mm | +40 mm |
| Sep | 30.1 °C | +0.8 °C | 164 mm | +7 mm |
| Oct | 32.4 °C | +0.7 °C | 61 mm | +22 mm |
| Nov | 35.6 °C | +1.4 °C | 0 mm | -2 mm |
| Dec | 35.0 °C | +1.2 °C | 0 mm | -0 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Rijau?
Rijau has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 27.7 °C and it receives 817 mm of precipitation per year.
What is the hottest day ever recorded in Rijau?
The hottest day measured in Rijau between 1940 and 2025 was 4 February 1998, reaching 42.8 °C.
What is the coldest day in Rijau?
The coldest day measured in Rijau between 1940 and 2025 was 8 January 1957, at 12.3 °C.
Does it snow in Rijau?
Almost never: Rijau sees virtually no snow, with about 0 frost days per year.
Has the climate of Rijau warmed?
Yes: Rijau warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Rijau?
The wettest day measured in Rijau between 1940 and 2025 was 7 August 2023, with 144 mm of rain in 24 hours.
What was the windiest day in Rijau?
The windiest day measured in Rijau between 1940 and 2025 was 16 April 1944, with winds reaching 31.6 km/h.
What is the warmest month in Rijau?
The warmest month in Rijau is April (31.9 °C on average); the coldest is August (24.8 °C).
How much does it rain in Rijau?
Rijau receives on average 817 mm of precipitation per year, spread over about 109 rainy days.
Is it sunny in Rijau?
Rijau gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.
Are there tropical nights in Rijau?
Yes: Rijau has on average 313 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Rijau?
In Rijau, between 1940 and 2025, the highest apparent temperature reached 45.8 °C on 17 April 1998, and the lowest was 6.9 °C on 8 January 1957.
Compare Rijau with another city
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Nearby cities
The climate around Rijau